patch 8.1.0679: sign functions do not take buffer argument as documented commit https://github.com/vim/vim/commit/2cbc1a02cb72916dfdbd0d307512c7c3fb766edf Author: Bram Moolenaar <Bram@vim.org> Date: Wed Jan 2 13:40:31 2019 +0100 patch 8.1.0679: sign functions do not take buffer argument as documented Problem: Sign functions do not take buffer argument as documented. Solution: Use get_buf_tv(). (Yegappan Lakshmanan, closes https://github.com/vim/vim/issues/3755)

func Test_yank_put_clipboard()
  new
  call setline(1, ['a', 'b', 'c'])
  set clipboard=unnamed
  g/^/normal yyp
  call assert_equal(['a', 'a', 'b', 'b', 'c', 'c'], getline(1, 6))

  set clipboard&
  bwipe!
endfunc

func Test_nested_global()
  new
  call setline(1, ['nothing', 'found', 'found bad', 'bad'])
  call assert_fails('g/found/3v/bad/s/^/++/', 'E147')
  g/found/v/bad/s/^/++/
  call assert_equal(['nothing', '++found', 'found bad', 'bad'], getline(1, 4))
  bwipe!
endfunc